在用单个包或类可以正常生成uml类图，在用测试的小工程也可行，但是用在公司的工程上就失败了，不知道是不是工程太大，下面是log里的记录：
!ENTRY org.eclipse.ui 4 0 2015-05-07 16:17:57.118
!MESSAGE Unhandled event loop exception
!STACK 0
org.eclipse.swt.SWTError: No more handles
at org.eclipse.swt.SWT.error(SWT.java:4308)
at org.eclipse.swt.SWT.error(SWT.java:4197)
at org.eclipse.swt.SWT.error(SWT.java:4168)
at org.eclipse.swt.graphics.Image.init(Image.java:1813)
at org.eclipse.swt.graphics.Image.init(Image.java:1959)
at org.eclipse.swt.graphics.Image.(Image.java:580)
at org.eclipse.jface.resource.URLImageDescriptor.createImage(URLImageDescriptor.java:162)
at org.eclipse.jface.resource.ImageDescriptor.createImage(ImageDescriptor.java:227)
at org.eclipse.jface.resource.ImageDescriptor.createImage(ImageDescriptor.java:205)
at org.topcased.modeler.uml.classdiagram.edit.PackageEditPart.refreshHeaderLabel(PackageEditPart.java:141)
at org.topcased.modeler.edit.EMFGraphNodeEditPart.refreshVisuals(EMFGraphNodeEditPart.java:132)
at org.topcased.modeler.edit.GraphNodeEditPart$GraphNodeEditPartListener.handleContainmentChanged(GraphNodeEditPart.java:131)
at org.topcased.modeler.listeners.GraphElementListener.safeNotifyChanged(GraphElementListener.java:135)
at org.topcased.modeler.listeners.GraphNodeListener.safeNotifyChanged(GraphNodeListener.java:32)
at org.topcased.modeler.listeners.UIAdapterImpl.notifyChanged(UIAdapterImpl.java:38)
at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:380)
at org.eclipse.emf.ecore.util.EcoreEList.dispatchNotification(EcoreEList.java:255)
at org.eclipse.emf.common.notify.impl.NotifyingListImpl.addUnique(NotifyingListImpl.java:300)
at org.eclipse.emf.common.util.AbstractEList.add(AbstractEList.java:307)
at org.topcased.modeler.uml.importer.dnd.GraphNodeCreationFactory.newPackageNode(GraphNodeCreationFactory.java:49)
at org.topcased.modeler.uml.importer.dnd.UMLDiagramGenerator.handlePackageNode(UMLDiagramGenerator.java:319)
at org.topcased.modeler.uml.importer.dnd.UMLDiagramGenerator.generateGraphNodes(UMLDiagramGenerator.java:302)
at org.topcased.modeler.uml.importer.dnd.UMLDiagramGenerator.generateGraphNodes(UMLDiagramGenerator.java:304)
at org.topcased.modeler.uml.importer.dnd.UMLDiagramGenerator.generateGraphNodes(UMLDiagramGenerator.java:304)
at org.topcased.modeler.uml.importer.dnd.UMLDiagramGenerator.generateGraphNodes(UMLDiagramGenerator.java:304)
at org.topcased.modeler.uml.importer.dnd.UMLDiagramGenerator.generateGraphNodes(UMLDiagramGenerator.java:304)
at org.topcased.modeler.uml.importer.dnd.UMLDiagramGenerator.generateGraphNodes(UMLDiagramGenerator.java:304)
at org.topcased.modeler.uml.importer.dnd.UMLDiagramGenerator.generateUMLDiagram(UMLDiagramGenerator.java:122)
at org.topcased.modeler.uml.importer.dnd.JavaClassFileTransferDropTargetListener.handleDrop(JavaClassFileTransferDropTargetListener.java:123)
at org.eclipse.gef.dnd.AbstractTransferDropTargetListener.drop(AbstractTransferDropTargetListener.java:183)
at org.eclipse.jface.util.DelegatingDropAdapter$3.run(DelegatingDropAdapter.java:211)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:49)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175)
at org.eclipse.jface.util.DelegatingDropAdapter.drop(DelegatingDropAdapter.java:209)
at org.eclipse.swt.dnd.DNDListener.handleEvent(DNDListener.java:90)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1077)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1062)
at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:774)
at org.eclipse.swt.dnd.DropTarget.Drop(DropTarget.java:456)
at org.eclipse.swt.dnd.DropTarget.Drop_64(DropTarget.java:392)
at org.eclipse.swt.dnd.DropTarget$3.method6(DropTarget.java:260)
at org.eclipse.swt.internal.ole.win32.COMObject.callback6(COMObject.java:119)
at org.eclipse.swt.internal.ole.win32.COM.DoDragDrop(Native Method)
at org.eclipse.swt.dnd.DragSource.drag(DragSource.java:363)
at org.eclipse.swt.dnd.DragSource.access$0(DragSource.java:289)
at org.eclipse.swt.dnd.DragSource$1.handleEvent(DragSource.java:172)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4165)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3754)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2701)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2665)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2499)
at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:679)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:668)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:123)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
at org.eclipse.equinox.launcher.Main.main(Main.java:1386)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.genuitec.pulse.eclipse.launcher.Main.main(Main.java:110)
!ENTRY org.eclipse.ui 4 0 2015-05-07 16:17:57.118
!MESSAGE Error occurred during status handling
!STACK 0
org.eclipse.swt.SWTError: No more handles
at org.eclipse.swt.SWT.error(SWT.java:4308)
